August 17, 2024

Cartographic Aotearoa

I try hard to keep this blog about basic open source processing in GIS. I don’t spend much time talking about my cartographic work, since I like to put it up in the gallery and let it speak for its...

Read post →
October 25, 2023

GRASS GIS, Docker, Makefile

Small example of using Docker and Makefile to implement GRASS GIS. This blog is written to be complimentary to the Github repository found here. Included in this post is a more verbose explanation ...

Read post →
November 10, 2022

Basic COG in Openlayers: Single Band Tif

This post covers loading a raw COG Tif and manipulating the values in JS. If you are unfamiliar with the COG Tif format, see here for an explanation. Openlayers has a few good examples on how to lo...

Read post →
April 16, 2021

RGB Elevation Creation for 3D Online Mapping (Terrain RGB)

The following is about how to build an elevation file to work with procedural-gl.js. I just really wanted to build my own elevation dataset and thought it would be helpful to share how I did it.

Read post →
May 5, 2020

Basic GRASS GIS with BASH, plus GDAL

As a follow-up to the last blog, I thought it would be helpful to demonstrate how to break up the elevation example into individual watersheds. The reason being, in my last example I demonstrated t...

Read post →